Information card for entry 9017021

Structure parameters

• Mineral name: Cristobalite
• Formula: He O2 Si
• Calculated formula: He8 O16 Si8
• Title of publication: Crystal structures and stabilities of cristobalite-helium phases at high pressures Note: P = 10 GPa
• Authors of publication: Matsui, M.; Sato, T.; Funamori, N.
• Journal of publication: American Mineralogist
• Year of publication: 2014
• Journal volume: 99
• Pages of publication: 184 - 189
• a: 8.062 Å
• b: 4.797 Å
• c: 9.491 Å
• α: 90°
• β: 120.43°
• γ: 90°
• Cell volume: 316.488 ų
• Ambient diffracton pressure: 10000000 kPa
• Number of distinct elements: 3
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/c 1
• Hall space group symbol: -P 2ybc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No